Glassware-forming machine



June 17, 1930. s HEWITT 1,764,166

' GLASSWARE FORMING MACHINE Filed March 22, 1928 FIE-l- Patented June '17, 1930 UNITED. STATES PATENT OFFICE s'ramv I4.

HEWITT, OI GLASSBORO, NEW JERSEY, ASSIGHOB OWENS-W018 GLASS COMPANY, 01' TOLEDO, OHIO, A CORPORATION 01' OHIO GLASBWABE-FOBMING MACHINE Application filed larch 22, 1928. Serial I0. 283,890.

more particularl to means for controlling holder will not cause or movement of mo (1 bottom plates.

In the production of hollow glassware on machines of the type to which the present invention relates, the finish molds in which the articles assumetheir final shape are opened at a predetermined station at which t e mold bottom tilts to a position permitting the ware to drop by ravity into a chute or joints from which t e ware passes to leer pans. In double mold operation, that is, operation of molds having two ware shaping cavities cooperatingwith a pair of .bo'ttom plates of ordinary construction, more or less diflicult is encountered in so ejecting the articles t at they fall into corresponding chutes with accuracy. This objection arises from the employment of the so-called floating bottom plates in which the plates are free to move relative to the-bottom plate holder when the finish mold sections close about said plates and a ain when the sections separate to ermrt ejection of the finished ware. Th1s latter movement has proven objectionable in that the timing of the ware e'ecting operation cannot be relied upon to e into the chutes or other ware handlin mechanism. Obviously, this is due to t e fact that there is no uniformity of spacing between the plates and chutes when the former are subject to varying degrees of lateral movement. An object of the present invention is to provide means to minimize, if not entirely eliminate lateral movement of the bottom plates relative to the bottom plate holder after the finish mold sections have 0 ned. Thus, tilting of the bottom plates an their rmit the bottom rom the positions Because of this arrangement, the articles are retained in pro r position relative to the plates to move laterall bottom plate ho der until the have reached the point at which they shoul be allowed to fall from said plates into the chutes,

Another ob ect of the invention is ect proper delivery of the ware provide yielding means which readily permlts alignment of the bottom plates with the mold cavities as the mold closes about said plates and at other times creates suflicient' frictional contact between the bottom lates and their holder to prevent lateral shifting of said plates, irrespective of the angular position of the holder, Other objects will be apparent, hereinafter. M

'In the accompanying drawings:

Fig. 1 is a sectional elevation illustrating In the drawings, the partible finish mold 5 is formed with two mold cavities 6, said mold being su ported. and alternately o ened and close in any approved manner, he upper end of this mold 5 cooperates with a partible neck mold 7. The lower end of the mold 5 coo erates with bottom. lates 8 and a bottom p ate holder 9 carrie by a frame 10 which s tiltingly supported on a track 11, a roller 12 being interposed between said frame 10 and track 11 for obvious reasons;- 4 The bottom-plate open frame 13 carrying a centrally disposed upwardly opening cup or well 14, sai cufi being connected to the frame 13 by radi ribs 15. This cup 14 and a horizontal flange 16 extending inwardly from the lower end of the frame 13, support a sup lemental frame 17, comprising a periphera portion 18 snu ly fitting into the openframe 13 Fig. 1 and carrying a centrally disposed holder 9 comprises an end of the cup 14. The head 21 of the cylinder 19 is formed with an axial opening 22 providing communication between the intioned relative to the holder terior of said cylinder and a transverse channel 23 in a reinforcing cross bar 24 which is integrally formed with the c linder 19 and 'the eripheral portion 18 of t e supplemental rame 17. A spring pressed detent 25 carried by the cup 14 removably secures the frames together in the fashion shown in Figs.- 1 and 3. v

The bottom plates 8 carry eye screws 26 which extend downwardly into recesses 27 into which the opposite ends of said transverse channel 23 open. A connector bar 28 is disposed in said channel 23-and has its ends projecting loosely through said eye screws 26. A screw 29 or some other similar element is fixed to the connector bar 28 and extends downwardly through the axial opening 22 in the cylinder head 21 for connection to one end of a coil spring 30 in'the cylinder 19. The other end of said coil spring is suitably connected to a cross pin 31 or the like, fixed to the lower portion of'said cylinder. The coil spring 30 yieldingly holds the bottom plates 8 in contact with the upper surface of the auxiliary frame unit 18 during the periods of time that the finish molds 5 are opened.

The lower portions of the walls of the mold cavities .6 are formed with inclined annular shoulders 32 which, when the mold 5 closes, engage downwardly facing inclined annular shoulders 33 on the mold bottom plates 8. This construction insures accurate alignment ofthe mold cavities and bottom plates when the mold closes.

The operation may be stated as follows: Prior to closin of themold 5 about parisons depending roin the neck mold 7, the coil spring 30 exerts such downward pull on the elements connecting said spring and the bottom plates that the latter are frictionally engaged with the upper surfaces of the bottom plate holder (Fig. 3) under such pres-' sure that tilting of said holder will not result in lateral movement of said plates relative to each other or the holder. Thus, these plates are at all times so accurately posi and mold 5 that when the mold closes about said plates,

the latter are subjected only to .a slight 'verh tical movement which lifts them to substantially the position shown in Fig. 1. It is evident that no lateral movement on the part of the bottom plates will be necessary to align them with the mold cavities.- After the parisons have been blown to the final form of the articles (Fig. 1) and the mold is approaching the ware ejecting station, both the neck and finish molds open, and knock-out arms (not shown) assist in supporting the articles upon the bottom plates 8 until the ejecting station has been reached. Simultaneously with opening of the finish mold, the spring 30 0 rates to-snugly interengage the bottom p ates and bottom plate holder so that when the holder is tilted Fig. 3) to eject the articles, the relative positions of the bottom plates to each other or to the holder are not changed. Thus, interference with orderly e'ection of the articles is avoided, with t e result that said articles are always deposited in the proper chutes or other ware handling means.

Modifications may be resorted to within the spirit and scope of the appended claims.

What I claim is:

1. Incombination, a tiltable bottom plate holder comprising a pair of open frames nested one within the other, means separably interconnecting said frames, a pair of bottom plates, and meansincluding a single spring providing a yielding connection between said bottom plates and the inner frame operating at times to effect a suflicientdegree of frictional engagement between said plates and holder to prevent relative lateral movement between said elements.

2. In combination, a tiltable bottom plate holder comprising a pair of open frames nested one within the other, means separably interconnecting said frames, a pair of bottom plates, and means providing a yielding connection between said bottom plates and the inner frame operating at times to effect a. sufiicientdegree of frictional engagement between said plates and holder to prevent relative lateral movement between said elements, said connection including a cross bar loosely interconnecting said bottom plates and a coil spring having connection at one end-to an intermediate portion of said bar and at its other end to one of said frames.

3. In combination, a tiltable bottom plate holder comprising a pair of open frames nested one within the other, means separably interconnecting said frames, a pair of bottom plates, means providing a yielding connection between said bottom plates and the inner frame operating at times to effect a suflicient degree of frictional engagement between said plates and holder to prevent relative lateral movement between'said' elements, said connection comprising a cross bar positioned below said bottom plates and aving its opposite ends loosely connected thereto, and yielding means exerting downward pressure on said cross bar to cause frictional engagement between said plates and holder at times preventin relative lateral movement between sai holder and plates.

4. In a machine for forming glass articles, the combination of a plural cavity mold, mold bottom plates individual to the mold cavities, a holder on which said bottom for universal lateral movement on said holder to ates are supported, said plates being free permit accurate alignment of the.

bottom plates with the mold cavities, and I yielding means including a single spring for 'cles, the combination of a frictionally opposing lateral movement of both said plates.

5. In a machine for forming glass artiplural cavity mold, mold bottom lates individualto the mold cavities, a hol er on which said plates are mounted, said plates being individually movable laterally on the holder for aligning them with the mold cavities, said holder and bottom plates being movable from a horizontally disposed to an inclined position for dischar 'ng articles when the mold is opened, an a single spring for frictionally holding both said plates against lateral movement while the holder is in discharging position. I

a 6. In combination, a plural cavity mold, a tiltable bottom plate holder comprising a pairof open frames nested one within the other, the inner frame having a plurality of openings adapted for register with the cavities of the mold at times, a plurality of bottom plates mounted for multi-directional movement on the inner frame, and means including a single spring carried by the inner frame and operating at times to' elleet such frictional engagement between the plates and inner frame that relative lateral movement. between the plates and between the plates and frame is prevented.

Signed at Glassboro, in the county of Gloucester and State of New Jersey, this 16th day of February, 1928.

STANLEY L. HEW l'l"l. 

